'Plow Bolt, Countersunk Square Neck, Alloy Steel, Plain Finish, Thread Size 1-8, Length 3 1/2 In, Grade 8, Head Dia 1.597 In, Head Height 0.737 In, #3 Dome Head Type, Head Angle 80 Deg, Square Width 1.031 In, Tensile Strength 150, 000, Meets/Exceeds SAE J 429, Package Quantity 5'